Re: [PATCH] perf/kprobe: maxactive for fd-based kprobe

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> On Wed, Jun 15, 2022 at 06:20:05PM +0000, Song Liu wrote:
>
>
> > On Jun 9, 2022, at 12:29 PM, Dmitrii Dolgov <9erthalion6@xxxxxxxxx> wrote:
> >
> > Enable specifying maxactive for fd based kretprobe. This will be useful
> > for tracing tools like bcc and bpftrace (see for example discussion [1]).
> > Use highest 12 bit (bit 52-63) to allow maximal maxactive of 4095.
> >
> > The original patch [2] seems to be fallen through the cracks and wasn't
> > applied. I've merely rebased the work done by Song Liu and verififed it
> > still works.
> >
> > [1]: https://github.com/iovisor/bpftrace/issues/835
> > [2]: https://lore.kernel.org/all/20191007223111.1142454-1-songliubraving@xxxxxx/
>
> Thanks for pulling this out of the cracks. :)
>
> Since there isn't much change from [2], I think this should still show
> "From:" me, and with "Signed-off-by" both of us.

Yep, sorry for that -- the second version should have all mentioned
correctly. Thanks!



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